Answer / ranjan,(wartsila)

i want to add 1 extra point with above answer,

In HTside current is lower than LT side,because of that
during tap change over arking will be less in HT side.

Answer / pasang, avit, chennai

Tappings of the transformer irrespective of either
Distribution or power transformers are on the HT side due
to the following reasons.

1. The HT windings have more No of turns than the LT
windings so that the flexibility of Stepping up and
stepping down is easier with more tappings.

2. The tap changing is easy and safe considering the
Voltage level and also the requisite voltage level either
step up/down can be acquired

Answer / kanaksinh

i agree above both answers good

Answer / animesh pal

1) In hv side current is low .so used switches ,circuit
breaker will be cheaper even though bushing is required.

2) in lv side if no of turn is reduced max flux density
will be increased [E constant].As we want flux density to be
at knee point,so flux density will be in saturation
region,iron loss increase,temp rise increase,efficiency
decrease.But for hv side max flux density will be
decreased.so loss will be less...

we have a 2.5hp Starite electric motor water pump,the elec motor burned out,we need to replace starting capacitor(old capacitor specs erased),what microfarad rating capacitor do we need? 110-125V

0 Answers  

---

electric contractor ya contactor kia hota hy ? or kesy connect kia jata hy ?

1 Answers  

---

how we sesign the transformer give some specifion regarding design of transformers

0 Answers  

---

We have 90mX100m hangar with 16 no.of supporting pillar. It is required to provide power supply on all pillars. what is suggested earthing scheme for hangars.

0 Answers   HAL,

---

How to select the ratio of neutral ct? Is there any relation in between percentage impedance and neutral ct ratio ?

1 Answers  

---

Can we use a absolute encoder to show rpm of a motor ? what about the condition when power is off ? what is difference if a incremental one is used ?abanirout@gmail.com

0 Answers  

---

why the AC or DC motor takes high starting current?

2 Answers  

---

why the air gap is necessary in the transformer core

1 Answers   Eskom,

---

hi plz send me reliance placement papers..i.e electrical technical papers that have been asked in reliance test.

0 Answers  

---

How much current in 100 kva Transformer HT & LT side

1 Answers  

---

In a power system we know that if the generated power is less than the load then the frequency of the system is decreases.So does this mean that total required load is delivered at alower frequency?

1 Answers  

---

in alternator permanent magnet generator is also connected on the alternator shaft,then y that PMG voltage is very low as compared to alternator?

1 Answers  

---